# Precious Coin Tester vs Sigma Mini

The clearest difference is rating: Precious Coin Tester at 4.5 against Sigma Mini's 4.0. Precious Coin Tester also leads on ratings volume (536 vs 4) and update cadence (fortnightly vs every 2 months). Sigma Mini's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Precious Coin Tester sells 1 in-app purchase, starting at $2.99 per month. Sigma Mini asks for nothing beyond the download.

Precious Coin Tester holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Precious Coin Tester has 536 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 48% of Precious Coin Tester's written reviews are positive against 38% of Sigma Mini's.

Precious Coin Tester ships an update fortnightly, Sigma Mini every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Precious Coin Tester | Sigma Mini |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (536 ratings)](https://appshunter.io/ios/app/precious-coin-tester/id1474466880/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/sigma-mini/id1548367153/reviews) |
| Number of ratings | **536** | 4 |
| Positive reviews | **47.5% of reviews** | 37.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 72 MB | 6 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [AUGer kit](https://appshunter.io/developer/1474466879) | [Richard Bessette](https://appshunter.io/developer/1548367155) |

## What reviewers say

### Precious Coin Tester

[App page](https://appshunter.io/ios/app/precious-coin-tester/id1474466880)

This app helps you test the authenticity of gold and silver coins by analyzing the sound they make when pinged. It provides detailed results to distinguish genuine coins from fakes, helping you avoid costly mistakes.

**Highlights:** Test gold and silver coin contents, Detect counterfeit coins, Access large coin database, Full-text search of coin database, Customize coin parameters, High-precision results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all coins 1 month | $2.99 | per month |

**What reviewers like**

- ✅ Accurately detects counterfeit coins and fakes
- 💰 Saves money by preventing fraudulent purchases
- 🆓 Free version available with basic functionality
- 📱 Easy to use interface for most users
- 🎯 Works well with Pocket Pinger device

**What reviewers complain about**

- 💳 Subscription model frustrates users
- 🔐 Most coins locked behind paywall
- 🐛 Frequent network errors and crashes
- 🔍 Poor search functionality
- 📊 Inconsistent and unreliable results

**Reported bugs**

- Network error messages preventing app use
- App crashes frequently
- Search returns zero or inconsistent results
- Coin detection fails or gives wrong results
- Server downtime and connectivity issues

**Requested features**

- One-time purchase option instead of subscription
- Save frequently used coins for quick access
- Improved search with keyword table of contents
- Categorized coin database by region
- Updated coin database through 2023+


### Sigma Mini

[App page](https://appshunter.io/ios/app/sigma-mini/id1548367153)

This utility app connects to a specific hardware device for enhanced functionality. It allows users to interact with and control the connected device, providing a seamless experience for its intended purpose. The application is designed for users who own the associated hardware.

**Highlights:** Connects to Sigma Metalytics Mini, Device interaction and control, Enhanced functionality for users, Seamless user experience

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Precious Coin Tester free?

Precious Coin Tester is free to download, with in-app purchases available.

### Is Sigma Mini free?

Sigma Mini is free to download, with no in-app purchases.

### Which has better reviews, Precious Coin Tester or Sigma Mini?

Precious Coin Tester is rated higher. Precious Coin Tester averages 4.5 out of 5 from 536 ratings, while Sigma Mini averages 4.0 from 4 ratings.

### Do Precious Coin Tester or Sigma Mini have ads?

Neither Precious Coin Tester nor Sigma Mini shows ads.

### Which is updated more often, Precious Coin Tester or Sigma Mini?

Precious Coin Tester ships an update fortnightly, and Sigma Mini every 2 months. Most recently, Precious Coin Tester was updated on October 24, 2026 and Sigma Mini on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*